BacKry is a legendary Runeword created by combining a Bac Rune of Ritual and a Kry Rune of Invocation.
How to Create BacKry
You can create BacKry by adding the legendary Bac Rune of Ritual and the rare Kry Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Bac - Travel 5 meters. (50)
Kry - Evoke the Spiritborn's , dealing damage and Pulling In enemies. (500)
Vortex
Overflow
BacKry can not overflow because the Kry Rune does not have an overflow effect.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.